Wausau Cty Wastewater Treatment Plt
435 Adrian St, Wausau, WI 54401 · Marathon County · Publicly Owned Treatment Works
- Average flow
- 5.3 MGD
- Design flow
- 9.2 MGD
- NPDES permit
- WI0025739
- Expired
- Permit expires
- December 2023
- Population served
- 42,857
- CWNS 2022
Wausau Cty Wastewater Treatment Plt is a publicly owned wastewater treatment works in Wausau, Marathon County, Wisconsin treating an average of 5.3 million gallons per day against a permitted design capacity of 9.2 MGD, serving about 42,857 residents. It discharges under NPDES permit WI0025739 (expired), which expires in December 2023, with 0 recorded violations in the last three years.
Treatment technology
3 treatment structures and unit processes identified at Wausau Cty Wastewater Treatment Plt.
Available with a free Klarifi account
See the full treatment train at Wausau Cty Wastewater Treatment Plt: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 0
- Effluent violations
- 0
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
2 verified contacts for Wausau Cty Wastewater Treatment Plt, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Wausau Cty Wastewater Treatment Plt, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Wisconsin
Brokaw · 6 mi away
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Wausau · 6 mi away
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Merrill · 16 mi away
—
Edgar · 16 mi away
0.22 MGD
Fenwood · 20 mi away
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Birnamwood · 21 mi away
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Athens · 22 mi away
0.14 MGD
Stratford · 24 mi away
0.14 MGD
Wausau Cty Wastewater Treatment Plt: frequently asked questions
Sources and methodology
Flow, permit and violation figures come from the EPA's ICIS-NPDES discharge monitoring records. Population served comes from the Clean Watersheds Needs Survey 2022. Treatment structures are identified by Klarifi's review of aerial imagery, and capital improvement projects are extracted from published municipal budget documents. Violations are counted over the last three years of monitoring reports.
Data refreshed October 26, 2026; facility record last updated March 5, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · FOG · Equalization tank · all terms